FDA Rejects Amphastar NDA for Nasal Naloxone
FDA has issued Amphastar Pharmaceuticals a complete response letter on an NDA for naloxone hydrochloride 2mg/0.5mL nasal spray, indicated for the emergency treatment of known or suspected opioid overdose, as manifested by respiratory and/or central nervous system depression. The letter, according to the company, “identifies issues including user human factors study, device evaluation, and other items that need to be addressed before the NDA can be approved.” Amphastar says it will continue to offer naloxone in pre-filled syringes while it works to gain approval of the NDA for intranasal naloxone.